According to IMDB: This film sat on the shelf unreleased for six years until is was picked up by distributor Jerry Gross (of Cinemation Industries), who needed a horror film to play on the bottom of a double bill with his in-house production I Drink Your Blood (1970). The title was changed to "I Eat Your Skin" (1970).
Originally shot in 1964
SYNOPSIS:A playboy adventure novelist joins his publisher on an expedition to Voodoo Island in the Caribbean, where a cancer researcher is being forced to turn the tribes-people into zombies.